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AstroPower is developing a two-junction monolithic tandem solar cell composed of (AlxGa1-x)0.51In.49P lattice matched to GaAs for use as the top cell in a three-junction, two-terminal tandem stack. This tunable bandgap material system is capable of current matching, at 2.03eV, in a two-junction monolithic tandem solar cell two terminal design of (AlxGa1-x)0.51In0.49P/GaAs yielding a best case pred ...

ASTROPOWER IS PROPOSING THE DEVELOPMENT OF AN ULTRA-LIGHTWEIGHT, HIGH PERFORMANCE, THIN LIGHT TRAPPING GAAS SOLAR CELL FOR ADVANCED SPACE POWER SYSTEMS. A THIN DEVICE LEADS TO HIGHER PERFORMANCE IN TERMS OF OPEN CIRCUIT VOLTAGE, RADIATION RESISTANCE, AND SPECIFIC POWER. IN A THIN DEVICE, THE INCORPORATION OF LIGHT TRAPPING TO EXTEND THE OPTICAL PATH LENGTH PERMITS GREATER CURRENT GENERATIC THAN CA ...

ASTROPOWER PROPOSES TO DEVELOP A LIGHTWEIGHT, HIGH PERFORMANCE, ULTRA-THIN ELECTROSTATICALLY BONDED GaAs SOLAR CELL WITH COPLANAR BACK CONTACTS. THE INNOVATIVE DESIGN INCORPORATES LIGHT TRAPPING, ADHESIVELESS COVER SLIDE BONDING, AND ELIMINATES GRID SHADING. THIS NOVEL DEVICE WILL EXHIBIT INCREASED EFFICIENCY AND SPECIFIC POWER DUE TO THE HIGHER OPEN CIRCUIT VOLTAGE AND SHORT CIRCUIT CURRENT OBTAI ...

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The threat of terrorist or military attack using biological, chemical or radiological weapons is one of the largest concerns to U.S. military forces. Development of defense initiatives that can be implemented to neutralize agents and decontaminatepersonnel, equipment and buildings are required to counter the potentially catastrophic effects of such an attack. A family of biocides has been identifi ...

Conventional volatile organic compound (VOC) recovery membranes (silicone rubber) preferentially transport organics over air. Although this silicone rubber has shown some success, it is not appropriate upstream of catalytic oxidation. Catalytic oxidation requires modest increases in VOC concentration at pressure to maintain performance. This is best achieved by using a reverse separation membra ...

Diesel generator sets (gen-sets) are used routinely to supply electrical power. Hospitals, businesses, and small communities use gen-sets to help reduce costs by load leveling and provide emergency power during blackouts (either scheduled or unscheduled). Recent power outages in California have led to large increases in the purchase of gen-sets, primarily for providing emergency power. In addit ...

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As the clock speeds of integrated circuits continue to increase, the technological limits of all-electrical interconnects are becoming the overwhelming limit to system performance. In particular, over 80% of the latency in current ICs is due tointerconnect limitations. Moreover, current processors are requiring operational powers in excess of 100 Watts with I/O, on-chip interconnections, and clo ...

A nearly universal trend in modern technology is integrating systems, and their associated devices, on decreasingly smaller scales. Examples range from complete telecommunication systems on a chip to implantable medical devices smaller than human cells.The majority of these devices apply hybrid designs that integrate on a commensurate scale electronics with active and passive optical components. ...